Abrégé

Disclosed are a process for producing a polymer composition having a high solubility in a solvent, and a polymer composition. The process for producing a polymer composition comprises polymerizing a radical polymerizable monomer in a solvent comprising a compound of formula (1) or (2) in the presence of a radical polymerization initiator:

Classes IPC  ?

• C08F 2/44 - Polymérisation en présence d'additifs, p. ex. plastifiants, matières colorantes, charges
• C08F 4/34 - Percomposés avec un seul radical peroxyde

Abrégé

The present invention is proposed is an oil-based white ink composition for ink jet recording, comprising a white pigment, a glycol ether dialkyl ether compound solvent, a polymeric dispersant, and a specific acrylic resin. The white pigment is formed of titanium oxide fine particles having an average particle diameter of not less than 0.15 μm and not more than 0.25 μm and coated with at least one of aluminum oxide and silicon oxide. The white pigment is further coated with not less than 0.01% by mass and not more than 2.5% by mass of at least one of an SiH-containing polysiloxane and dimethylpolysiloxane.

Classes IPC  ?

• A61Q 19/00 - Préparations pour les soins de la peau
• B01F 17/00 - Utilisation de substances comme agents émulsifiants, humidifiants, dispersants ou générateurs de mousse
• B60C 1/00 - Pneumatiques caractérisés par la composition chimique, la disposition ou le mélange physique de la composition
• C08J 3/00 - Procédés pour le traitement de substances macromoléculaires ou la formation de mélanges
• C08K 3/10 - Composés métalliques
• C08K 3/18 - Composés contenant de l'oxygène, p. ex. métaux-carbonyles

Abrégé

The object of the invention is to provide an inkjet recording oil green ink composition that excels more in terms of all the quality of prints, stability on printing, the ability of prints to be dried, and ink storage stability, and is capable of making wider a color reproduction area expressed by yellow and cyan. The inkjet recording oil green ink composition contains as an organic green pigment coloring agent C. I. Pigment Green 58 comprising a (poly) halogenated zinc phthalocyanine. The invention also provides an ink set comprises the inventive oil green ink composition and further includes at least an oil yellow ink composition and an oil cyan ink composition.

Classes IPC  ?

• C09D 11/02 - Encres d’imprimerie
• C09D 11/10 - Encres d’imprimerie à base de résines artificielles

Abrégé

The object of the invention is to provide an oil ink set capable of obtaining images having high color reproduction capabilities and high color saturation in particular. The oil ink set of the invention comprises a firsts a second, and a third oil ink having a wavelength region in which the reflectivity of each oil ink on a recording medium changes from 80% to 5% in the wavelength range of 400 nm to 700 nm. In this wavelength region, the reflectivity of the first oil ink is continuously higher than that of the first oil ink, and in the wavelength in which the reflectivity of the second oil ink changes from 80% to 5%, the reflectivity of the third oil ink is continuously higher than that of the second oil ink. Moreover, the coloring materials in the first, the second and the third oil inks are all different.

Classes IPC  ?

• C09D 11/00 - Encres

Abrégé

The invention provides an oil-based ink composition for ink jet recording, which is best suited for printing onto polyvinyl chloride substrates, and improved in terms of both the stabilities of ink on storage and jetting, and a method for inspecting the same. The oil-based ink composition for ink jet recording comprises as a main solvent at least a specific polyalkylene glycol dialkyl ether and containing at least a specific quinacridone pigment component. That composition should be such that when a measuring sample comprising it is analyzed by means of high speed liquid chromatography under specific measuring conditions, the concentration of a component having a peak at the holding time of 10.3 minutes is 0.4 ppm or less.

Classes IPC  ?

• G01N 30/02 - Chromatographie sur colonne
• C09D 11/00 - Encres

Abrégé

Disclosed is an oil-based ink composition for inkjet recording, which contains a binder resin, a dispersing agent and at least C. I. pigment yellow 213 as an organic pigment in an organic solvent composed of a specific polyalkylene glycol dialkyl ether and/or a specific cyclic ester and having a boiling point of 150-280˚C. This oil-based ink composition for inkjet recording is highly safe to the human body, and enables to maintain the quality of printed matter over a long time since it has excellent weather resistance.

Classes IPC  ?

• B41J 2/01 - Machines à écrire ou mécanismes d'impression sélective caractérisés par le procédé d'impression ou de marquage pour lequel ils sont conçus caractérisés par la mise en contact sélective d'un liquide ou de particules avec un matériau d'impression à jet d'encre
• B41M 5/00 - Procédés de reproduction ou méthodes de reproduction ou de marquageMatériaux en feuilles utilisés à cet effet
• C09D 11/00 - Encres
• C09D 11/322 - Encres à pigments
• C09D 11/326 - Encres à pigments caractérisées par le dispersant du pigment
• C09D 11/36 - Encres pour l'impression à jet d'encre à base de solvants non aqueux
• C09D 11/38 - Encres pour l'impression à jet d'encre caractérisées par des additifs non macromoléculaires autres que les solvants, les pigments ou les colorants

Abrégé

Disclosed is an oil-based white ink composition for inkjet recording. The oil-based white ink composition contains a white pigment, a glycol ether dialkyl ether solvent, a polymer dispersing agent, and a specific acrylic resin. The white pigment is obtained by further coating titanium oxide particles, which have an average particle diameter of not less than 0.15 &mgr;m but not more than 0.25 &mgr;m and are coated with an oxide of aluminum and/or silicon, with not less than 0.01% by mass but not more than 2.5% by mass of an SiH-containing polysiloxane and/or dimethylpolysiloxane.

Classes IPC  ?

• C09D 11/00 - Encres